We look at the division of 43402782 by 639 
We're looking to find how many times 639 goes into 43402782.

Advancing to step 1:
639 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 639

Moving on to step 2:
The number 639 fits into 43 0 times, leaving a remainder of 43.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 43 to get 43.
Take the next digit (4) from the dividend and append it to 43, then repeat: 434 / 639

Let's proceed to step 3:
434 divided by 639 is 0 with a remainder of 434.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 434 after subtracting 0 from 434.
Include the next digit (0) from the dividend after 434, then repeat: 4340 / 639

Step 4:
If we divide 4340 by 639, we get 6 and a remainder of 506.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtract 3834 from 4340 to get 506.
Grab the next digit (2) from the dividend, add it to 506, then carry on: 5062 / 639

Moving on to step 5:
5062 divided by 639 is 7 with a remainder of 589.
Use 7 as the next digit of our solution. 
Result so far: 67.0
Deduct 4473 from 5062 and we're left with 589.
Bring next digit (7) of the dividend behind the 589 and repeat the process: 5897 / 639

Moving on to step 6:
The number 639 fits into 5897 9 times, leaving a remainder of 146.
Put 9 as the next digit of the answer. 
Result so far: 679.0
Subtracting 5751 from 5897 leaves us with 146.
Append the next digit (8) from the dividend to 146 and continue with: 1468 / 639

Advancing to step 7:
The number 639 fits into 1468 2 times, leaving a remainder of 190.
The number 2 becomes the next digit in our result. 
Result so far: 6792.0
Subtract 1278 from 1468 to get 190.
Include the next digit (2) from the dividend after 190, then repeat: 1902 / 639

Let's proceed to step 8:
If we divide 1902 by 639, we get 2 and a remainder of 624.
Write down 2 as next digit of the result. 
Result so far: 67922.0
The remainder is 624 after subtracting 1278 from 1902.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

Moving on to step 9:
639 can be fit into 6240 9 times, resulting in a remainder of 489.
The next digit of our result is 9. 
Result so far: 67922.9
If we take 5751 away from 6240, we end up with 489.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4890, and continue the process.

On to step 10:
639 goes into 4890 7 times with a remainder of 417.
The next digit of our result is 7. 
Result so far: 67922.97
Subtracting 4473 from 4890 leaves us with 417.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4170, and continue the process.

Advancing to step 11:
If we divide 4170 by 639, we get 6 and a remainder of 336.
Write down 6 as next digit of the result. 
Result so far: 67922.976
Subtracting 3834 from 4170 leaves us with 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Moving on to step 12:
639 goes into 3360 5 times with a remainder of 165.
Record the quotient 5 as the next digit in the result. 
Result so far: 67922.9765
If we subtract 3195 from 3360, we get 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Let's proceed to step 13:
639 goes into 1650 2 times with a remainder of 372.
Write down 2 as next digit of the result. 
Result so far: 67922.97652
Deduct 1278 from 1650 and we're left with 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

On to step 14:
639 goes into 3720 5 times with a remainder of 525.
Put 5 as the next digit of the answer. 
Result so far: 67922.976525
If we take 3195 away from 3720, we end up with 525.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

Moving on to step 15:
639 goes into 5250 8 times with a remainder of 138.
Use 8 as the next digit of our solution. 
Result so far: 67922.9765258
Deduct 5112 from 5250 and we're left with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Going ahead to step 16:
639 goes into 1380 2 times with a remainder of 102.
Put 2 as the next digit of the answer. 
Result so far: 67922.97652582
If we subtract 1278 from 1380, we get 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

The final result is 67922.97652582 with a remainder of 1.02e-07.